Directions
1. Boil water. Remove from heat and add Epsom salts. Stir until the Epsom salts are dissolved.
2. Pour the mixture into a shallow container or dish, just enough to cover the bottom. You can pour the mixture over a sponge if you want. It will make the crystals a bit easier to see because they will form around the sponge.
3. Put the container in a safe, sunny place. As the water evaporates, crystals will start to form.